# MikroTik WinBox Terminal Client: implementing the terminal protocol

> MikroTik WinBox Terminal Client implements RouterOS CLI access over the proprietary WinBox terminal protocol on TCP port 8291. Its Python code handles M2 TLV messages, EC-SRP5 or legacy MD5 authentication and AES-128-CBC terminal traffic. A companion specification records handshake fields, key derivation and message framing.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/subixonfire/winbox-terminal-protocol>
- Primary source: <https://github.com/subixonfire/winbox-terminal-protocol/blob/a377741075a6bcc971e64c1653703b49c03bfb6d/README.md>
- Catalog page: <https://awesomerea.org/resources/winbox-terminal-protocol-case/>
- Record JSON: <https://awesomerea.org/resources/winbox-terminal-protocol-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/winbox-terminal-protocol-case/index.md)

## Requirements & limits

- **Prerequisites:** Python 3 with pycryptodome and ecdsa, plus access to a RouterOS device.
- **Limits:** Only the terminal protocol is supported; GUI messages, certificate authentication and multiplexed sessions are excluded.
- **License:** MIT license.

## Primary sources

1. <https://github.com/subixonfire/winbox-terminal-protocol/blob/a377741075a6bcc971e64c1653703b49c03bfb6d/README.md>
2. <https://github.com/subixonfire/winbox-terminal-protocol/blob/a377741075a6bcc971e64c1653703b49c03bfb6d/PROTOCOL.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.